There is a silver lining: Even stem cells that don't grow into new heart cells seem to help patients in other ways. (articles.latimes.com)
The goal of stem cell therapy is to replace the damaged tissue with new heart cells and restore the failing heart to normal function. (sciencedaily.com)
Studies have reported that stem cells can effectively support the heart not by becoming new heart cells, but by releasing healing proteins, including ones that promote blood vessel growth. (sciencedaily.com)